The correct order of the rate of ${\mathrm{S}}_{\mathrm{N}}2$ reaction in the following alkyl halides is:

For the following reaction, the rate is expressed as,

$\mathrm{rate}=4.7\times {10}^{-5}\left[\mathrm{RX}\right]\left[{\mathrm{OH}}^{-}\right]+0.24\times {10}^{-5}\left[\mathrm{RX}\right]$.

Which of the following is true?

What is correct about the given reaction?

End product $\mathrm{D}$ of the following reaction will be: